(Full Video) 36:02

An important part of the promise of mobile banking is the rich customer data it generates. Most of this “big data” sits idle on servers because so many banks have yet to figure out how to mine it effectively. But some banks, particularly in emerging markets, have cracked the code. Banks can learn from their peers and can also look to companies in other industries, such as Amazon, Facebook and Tesco, for business models.

4:29 (Part 7 of 18)

Despite all the potential, it remains unclear just how quickly banks should move into mobile banking, given high upfront and ongoing technology costs. “No one has really made a strong business case for how much additional revenue and/or profit banks will receive through mobile banking,” notes Wharton management professor Keith Weigelt.